Cothornobata zhangae, Li, Xuankun, Marshall, Stephen A. & Yang, Ding, 2015

Li, Xuankun, Marshall, Stephen A. & Yang, Ding, 2015, A review of the Oriental species of Cothornobata Czerny (Diptera, Micropezidae, Eurybatinae), Zootaxa 4006 (2), pp. 201-246 : 223

9. Cothornobata zhangae sp. nov.

( Figs. 11 , 12 )

Diagnosis. Fore tibia dark yellow to brown with darker base and apex, fore tarsus blackish-brown. Median occipital sclerite with a large dark yellow trianglar spot at middle. Genital fork with basal tubercle distinct and finger-like. Distiphallus slightly longer than phallapodeme.

Description. Male. Body length 11.5–12.0 mm, wing length 8.0– 8.5 mm.

Head mostly subshiny blackish-brown with very thin gray pollinosity. Frontal vitta dark yellow, densely microsetulose, about 1/2 width of frons; lower orbital plate dull pollinose; ocellar triangle black; median occipital sclerite with a large dark yellow trianglar spot at middle; lunule orange; face pale yellow, densely microsetulose; gena light brown, lightly pollinose; clypeus uniformly brown, shiny. Setae and setulae on head black; two strong fronto-orbital setae, postgena with 1 strong seta at lower margin. Antenna brownish-yellow; pedicel with 1 ventral apical seta more than half length of first flagellomere; first flagellomere 1.5X longer than wide; arista brown, nearly 3.4X length of first flagellomere, arista long pubescent with distal half bare. Proboscis brownish-yellow with brown apex, setulae brown. Palpus yellow, setulae black.

Thorax blackish-brown, with pale gray pollinosity. Scutellum slightly convex, angled dorsally. Setae on thorax black, setulae blackish; katepisternum with 3 to 4 strong setae.

Legs mostly yellow, except hind coxae brown, apical 2/5 of fore femur, apical 1/5 of mid femur and apical 1/6 of hind femur black; tibiae dark yellow to brown with base and apex darker; tarsi blackish-brown.

Wing light brown with distal and discal bands brown; distal band basal to middle of distal section of M1; discal band along M1 and anterior to R4+5, basal to middle of penultimate section of M1 and distal to dm-cu. Bm-cu proximal to CuA2, A1+CuA2 2. 3 X as long as CuA2; distance between apex of R2+3 and R4+5 0. 5 X as long as M1 beyond dm-cu ( Fig. 11 C). Halter pale yellow with brown base.

Abdomen mostly brown with pale gray pollinosity, tergites 2–4 with pale gray pollinosity apically. Pleuron uniformly dark gray. Genital fork brownish-yellow to brown. Epandrium brownish-yellow. Genital fork with blackish-brown to black setulae; basal tubercle distinct and papillary, with a cluster of setulae; arm about 1.2X as long as base, thick basally and slender before apex ( Fig. 11 D). Pregonite expanded. Postgonite narrow and apically out-turned, without an acute bend ( Fig. 11 GH).

Female. Body length 11.0 mm, wing length 8.0 mm. Tergites 1–4 dark brown, tergites 2–5 with pale gray pollinosity apically, tergite 5, tergite 6 and oviscape shiny black. Oviscape 1.4X length of tergite 6, blackish-brown, with short blackish-brown setulae.

Type material. HOLOTYPE: CHINA, Guangxi Province: Nanning, Daming Mountain, 29.v.2011, Tingting Zhang (♂, CAU). PARATYPE: CHINA, Guangxi Province: Nanning, Daming Moutain, 27.v.2011, Tingting Zhang (1 ♂, 1 ♀, CAU).

Distribution. Oriental: China (Guangxi).

Remarks. Cothornobata zhangae is similar to C. paieroi sp. nov. and C. pugnoa sp. nov., but differs in having the fore tarsus blackish-brown, the upper occiput with a big triangular dark yellow spot at middle, the genital fork with a distinct and finger-like basal tubercle, arm about 1.2X as long as base, thick basally and slender before apex, and the distiphallus slightly longer than the phallapodeme.

Etymology. This species is named after the type collector, Dr. Tingting Zhang.

Figures

FIGURE 11. Cothornobata zhangae sp. nov., male. A, left lateral; B, head; C, wing; D, genital fork; E, genitalia, left lateral; F, genitalia, posterior; G, aedeagus and associated structures, left lateral; H, aedeagus and associated structures, ventral. Scale bars = 1 mm.

FIGURE 12. Cothornobata zhangae sp. nov., female. A, left lateral; B, spermathecae and associated structures. Scale bars = 1 mm.